package com.wrl.design.principle.singleresponsibility;

/**
 * @author Wang Renlei
 * @Date 2019/11/5 0005
 */
public class CourseImpl implements ICourseContent,ICourseManage {
    @Override
    public String getCourseName() {
        return null;
    }

    @Override
    public byte[] getCourseVideo() {
        return new byte[0];
    }

    @Override
    public void studayCourse() {

    }

    @Override
    public void refundCourse() {

    }
}
